Changes in version 0.1.0                        

  - Adds an Athena DBI backend and dbplyr workflows, including
    positional query parameters and Arrow retrieval.
  - Preserves schemas for empty results through the shared Rust and
    Parquet reader.
  - Opens browser SSO sign-in when needed and renews credentials through
    AWS providers.
  - Adds Parquet saved results with freshness policies and named
    snapshots.
  - Remote median() and quantile() now direct researchers to the
    explicit approx_median() and approx_quantile() helpers.